Right now
The most recent data we hold from NOAA arrived 2 hours ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 20 May 2026 at 21:30 UTC. It is kept here as a record.
It is the 2nd strongest of the 92 detections recorded within 20 km of this point since 16 March 2026. Another comparable one was recorded here earlier the same day. 6 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 20 at 5:06PM EDT until May 20 at 5:30PM EDT by NWS Charleston WV
An estimated 46,838 people live within 50 km of this point.
Nearby, since 16 March 2026
- August 6, 2026 · score 28 · 7.6 km
- August 8, 2026 · score 34 · 20.2 km
How we know
Confirmed by 6 independent sources, including NOAA.
Our own score for this event is 34 out of 100, at 90 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Our confidence | 90% |
| Coordinates | 38.4783, -81.3635 |
| Nearest City | Charleston (27 km) |
| Population Exposed | 46.8K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-20T21:06:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.a0d11f3fcc7ce80dea44e7b214388481 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Clay, WV; Kanawha, WV; Roane, WV; Braxton, WV; Gilmer, WV; Lewis, WV; Boone, WV; Lincoln, WV; Wayne, WV |
| Headline | Severe Thunderstorm Warning issued May 20 at 5:06PM EDT until May 20 at 5:30PM EDT by NWS Charleston WV |
| Expires | 2026-05-20T17:30:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 3 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.a0d11f3fcc7ce80dea44e7b214388481cb73915b.001.1","noaa_urn:oid:2.49.0.1.840.0.fe9105b2887edee2701b1f98996b57c0a6f90982.001.1","noaa_urn:oid:2.49.0.1.840.0.a0024bbd2af6df5a26e5968cd36adf5c18f1f592.001.1"] |
| Iem TypeSummary | D |
| Iem City | 3 W Coal Fork |
| Iem County | Kanawha |
| Iem State | WV |
| Iem Wfo | RLX |
| Iem Remark | Tree down. |
| MergedSources | [{"id":"iem_H_38.480_-81.660_1779309720000","source":"iem","severity":"low","severityValue":25,"timestamp":1779309720000,"latitude":38.48,"longitude":-81.66},{"id":"iem_H_38.460_-81.770_1779307680000","source":"iem","severity":"low","severityValue":25,"timestamp":1779307680000,"latitude":38.46,"longitude":-81.77},{"id":"iem_H_38.480_-81.810_1779307680000","source":"iem","severity":"low","severityValue":25,"timestamp":1779307680000,"latitude":38.48,"longitude":-81.81},{"id":"iem_H_38.460_-81.820_1779307500000","source":"iem","severity":"low","severityValue":25,"timestamp":1779307500000,"latitude":38.46,"longitude":-81.82},{"id":"iem_D_38.320_-81.580_1779308940000","source":"iem","severity":"low","severityValue":25,"timestamp":1779308940000,"latitude":38.32,"longitude":-81.58}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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